Match List I with List II and select the correct answer using the code given below the lists :
| List I (Soil type) | List II (Major characteristic) |
|---|---|
| A. Oxisols | 1. Very rich in organic matter |
| B. Vertisols | 2. Soil lacking horizons |
| C. Histosols | 3. Very old and highly weathered |
| D. Entisols | 4. Rich in clay content and highly basic |
Code :
A-3, B-1, C-4, D-2
A-3, B-4, C-1, D-2
A-2, B-1, C-4, D-3
A-2, B-4, C-1, D-3
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CDS-2 – 2019
– **Vertisols (B):** These are clay-rich soils that shrink and swell significantly upon drying and wetting, respectively. This shrink-swell action creates deep cracks. They are often rich in montmorillonite clay and can be highly basic (matches 4).
– **Histosols (C):** These are organic soils formed in wetlands, composed mainly of peat or muck. They contain a large amount of organic matter, usually more than 20% (matches 1).
– **Entisols (D):** These are young soils that have little or no morphological development of pedogenic horizons. They lack distinct layers characteristic of more developed soils (matches 2).